Thakkar Pheru


Thakkar Pheru was an author of books on mathematics, coins, and gems in Delhi. He was active between 1291 and 1323.
Alauddin Khalji recruited Ṭhakkura Pherū, a Shrimal Jain from Kannāṇā in Haryana, as an expert on coins, metals and gems. For the benefit of his son Hemapal, he wrote several books on related subjects including Dravyaparīkṣa in 1318 based on his experience at the master mint, and the Ratnaparikṣa in 1315 "having seen with my own eyes the vast collection of gems … in the treasury of Alāʾ al-Dīn Khaljī." He was continuously employed until the rule of Ghiasuddin Tughluq.
He is also known for his work on mathematics Ganitasārakaumudi